57427315997 has 2 divisors, whose sum is σ = 57427315998. Its totient is φ = 57427315996.

The previous prime is 57427315991. The next prime is 57427316039. The reversal of 57427315997 is 79951372475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51833173561 + 5594142436 = 227669^2 + 74794^2 .

It is a cyclic number.

It is not a de Polignac number, because 57427315997 - 2⁸ = 57427315741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57427315991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28713657998 + 28713657999.

It is an arithmetic number, because the mean of its divisors is an integer number (28713657999).

Almost surely, 2^57427315997 is an apocalyptic number.

It is an amenable number.

57427315997 is a deficient number, since it is larger than the sum of its proper divisors (1).

57427315997 is an equidigital number, since it uses as much as digits as its factorization.

57427315997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16669800, while the sum is 59.

The spelling of 57427315997 in words is "fifty-seven billion, four hundred twenty-seven million, three hundred fifteen thousand, nine hundred ninety-seven".